Computer Science – Software Engineering
Scientific paper
May 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990tdar.nasa...39t&link_type=abstract
In its The Telecommunications and Data Acquisition Report p 39-49 (SEE N90-26217 20-32)
Computer Science
Software Engineering
Complex Systems, Computer Programming, Deep Space Network, Heuristic Methods, Mission Planning, Orbit Calculation, Space Navigation, Systems Engineering, Data Processing Equipment, Interplanetary Spacecraft, Software Engineering, Space Missions
Scientific paper
The NASA/JPL deep space navigation system consists of a complex array of measurement systems, data processing systems, and support facilities, with components located both on the ground and on-board interplanetary spacecraft. From its beginings nearly 30 years ago, this system has steadily evolved and grown to meet the demands for ever-increasing navigation accuracy placed on it by a succession of unmanned planetary missions. Principal characteristics of this system are its capabilities and great complexity. Three examples in the design and development of interplanetary space navigation systems are examined in order to make a brief assessment of the usefulness of three basic design theories, known as normative, rational, and heuristic. Evaluation of the examples indicates that a heuristic approach, coupled with rational-based mathematical and computational analysis methods, is used most often in problems such as orbit determination strategy development and mission navigation system design, while normative methods have seen only limited use is such applications as the development of large software systems and in the design of certain operational navigation subsystems.
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